Magnetic Properties of the M-Type Ferrite Fine Particles of the (Sr Ba)-La-Co System Prepared by Controlling the Chemical Coprecipitation Method.
-
- Yamamoto Hiroshi
- School of Science and Technology, Meiji University
-
- Ozaki Yasuaki
- School of Science and Technology, Meiji University
Bibliographic Information
- Other Title
-
- 化学的共沈法による(Sr・Ba)‐La‐Co系M型フェライト微粒子の磁気特性
- カガクテキ キョウチンホウ ニ ヨル Sr Ba La Coケイ Mガタ フェライト ビリュウシ ノ ジキ トクセイ
Search this article
Abstract
(Sr⋅Ba)-La-Co M-type ferrite fine particles were prepared by the chemical coprecipitation and subsequent heat-treatment method. The chemical reagents used for the experiment were FeCl3⋅6H2O, BaCl2⋅6H2O, SrCl2.6H2O, LaCl3⋅7H2O, and CoCl2.6H2O. The chemical coprecipitation process was applied to the samples having the formula. {(SrO)1-x⋅(BaO)x⋅n/2(Fe2O3)}100-Y-Z(La2O3)Y(CoO)Z (n=6.0-12.0, x=0.0-1.0, y=1.0-10.0, z=1.0-10.0). The solution containing Sr2+, Ba2+, Fe3+, La3+, and Cot2+ was poured into solution of NaOH (pH=13.0). The precipitated products were boiled for 2h and they were carefully washed with water and dried. The obtained fine particles were heated at 950 to 1100°C for 2h in air to obtain the single phase of (Sr⋅Ba)-La-Co M-type ferrite fine particles. The best magnetic properties were observed for the sample with the composition of {(SrO)0.8⋅(BaO)0.2⋅3.5(Fe2O3)} 88.0 (La2O3)6.0(CoO)6.0, and magnetic properties were as follows: σs= 84.8 × 10-6 Wb⋅m/kg (67.5 emu/g), σr=42.8 × 10-6 Wb⋅m/kg (34.1 emu/g), HcJ=476.6 kA/m (5.98 kOe) and Tc=452.6°C.
Journal
-
- Journal of the Japan Society of Powder and Powder Metallurgy
-
Journal of the Japan Society of Powder and Powder Metallurgy 49 (6), 496-502, 2002
Japan Society of Powder and Powder Metallurgy
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001206309520896
-
- NII Article ID
- 10008833487
-
- NII Book ID
- AN00222724
-
- COI
- 1:CAS:528:DC%2BD38XlsVygt7s%3D
-
- ISSN
- 18809014
- 05328799
- http://id.crossref.org/issn/05328799
-
- NDL BIB ID
- 6190611
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed